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313 lines
12 KiB
C
313 lines
12 KiB
C
/**
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* \file sha512.h
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* \brief This file contains SHA-384 and SHA-512 definitions and functions.
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*
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* The Secure Hash Algorithms 384 and 512 (SHA-384 and SHA-512) cryptographic
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* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBEDTLS_SHA512_H
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#define MBEDTLS_SHA512_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#include <stddef.h>
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#include <stdint.h>
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/* MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED is deprecated and should not be used. */
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#define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */
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#define MBEDTLS_ERR_SHA512_BAD_INPUT_DATA -0x0075 /**< SHA-512 input data was malformed. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(MBEDTLS_SHA512_ALT)
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// Regular implementation
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//
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/**
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* \brief The SHA-512 context structure.
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*
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* The structure is used both for SHA-384 and for SHA-512
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* checksum calculations. The choice between these two is
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* made in the call to mbedtls_sha512_starts_ret().
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*/
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typedef struct mbedtls_sha512_context {
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uint64_t total[2]; /*!< The number of Bytes processed. */
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uint64_t state[8]; /*!< The intermediate digest state. */
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unsigned char buffer[128]; /*!< The data block being processed. */
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#if !defined(MBEDTLS_SHA512_NO_SHA384)
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int is384; /*!< Determines which function to use:
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0: Use SHA-512, or 1: Use SHA-384. */
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#endif
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}
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mbedtls_sha512_context;
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#else /* MBEDTLS_SHA512_ALT */
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#include "sha512_alt.h"
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#endif /* MBEDTLS_SHA512_ALT */
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/**
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* \brief This function initializes a SHA-512 context.
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*
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* \param ctx The SHA-512 context to initialize. This must
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* not be \c NULL.
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*/
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void mbedtls_sha512_init(mbedtls_sha512_context *ctx);
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/**
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* \brief This function clears a SHA-512 context.
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*
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* \param ctx The SHA-512 context to clear. This may be \c NULL,
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* in which case this function does nothing. If it
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* is not \c NULL, it must point to an initialized
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* SHA-512 context.
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*/
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void mbedtls_sha512_free(mbedtls_sha512_context *ctx);
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/**
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* \brief This function clones the state of a SHA-512 context.
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*
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* \param dst The destination context. This must be initialized.
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* \param src The context to clone. This must be initialized.
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*/
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void mbedtls_sha512_clone(mbedtls_sha512_context *dst,
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const mbedtls_sha512_context *src);
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/**
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* \brief This function starts a SHA-384 or SHA-512 checksum
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* calculation.
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*
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* \param ctx The SHA-512 context to use. This must be initialized.
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* \param is384 Determines which function to use. This must be
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* either \c 0 for SHA-512, or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will return
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* #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_starts_ret(mbedtls_sha512_context *ctx, int is384);
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/**
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* \brief This function feeds an input buffer into an ongoing
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* SHA-512 checksum calculation.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param input The buffer holding the input data. This must
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* be a readable buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_update_ret(mbedtls_sha512_context *ctx,
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const unsigned char *input,
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size_t ilen);
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/**
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* \brief This function finishes the SHA-512 operation, and writes
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* the result to the output buffer.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param output The SHA-384 or SHA-512 checksum result.
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* This must be a writable buffer of length \c 64 Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_finish_ret(mbedtls_sha512_context *ctx,
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unsigned char output[64]);
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/**
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* \brief This function processes a single data block within
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* the ongoing SHA-512 computation.
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* This function is for internal use only.
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*
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* \param ctx The SHA-512 context. This must be initialized.
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* \param data The buffer holding one block of data. This
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* must be a readable buffer of length \c 128 Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_internal_sha512_process(mbedtls_sha512_context *ctx,
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const unsigned char data[128]);
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#if !defined(MBEDTLS_DEPRECATED_REMOVED)
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#if defined(MBEDTLS_DEPRECATED_WARNING)
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#define MBEDTLS_DEPRECATED __attribute__((deprecated))
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#else
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#define MBEDTLS_DEPRECATED
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#endif
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/**
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* \brief This function starts a SHA-384 or SHA-512 checksum
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* calculation.
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*
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* \deprecated Superseded by mbedtls_sha512_starts_ret() in 2.7.0
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*
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* \param ctx The SHA-512 context to use. This must be initialized.
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* \param is384 Determines which function to use. This must be either
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* \c 0 for SHA-512 or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will fail to work.
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha512_starts(mbedtls_sha512_context *ctx,
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int is384);
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/**
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* \brief This function feeds an input buffer into an ongoing
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* SHA-512 checksum calculation.
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*
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* \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param input The buffer holding the data. This must be a readable
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* buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha512_update(mbedtls_sha512_context *ctx,
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const unsigned char *input,
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size_t ilen);
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/**
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* \brief This function finishes the SHA-512 operation, and writes
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* the result to the output buffer.
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*
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* \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param output The SHA-384 or SHA-512 checksum result. This must
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* be a writable buffer of size \c 64 Bytes.
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha512_finish(mbedtls_sha512_context *ctx,
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unsigned char output[64]);
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/**
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* \brief This function processes a single data block within
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* the ongoing SHA-512 computation. This function is for
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* internal use only.
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*
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* \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0.
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*
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* \param ctx The SHA-512 context. This must be initialized.
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* \param data The buffer holding one block of data. This must be
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* a readable buffer of length \c 128 Bytes.
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha512_process(
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mbedtls_sha512_context *ctx,
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const unsigned char data[128]);
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#undef MBEDTLS_DEPRECATED
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#endif /* !MBEDTLS_DEPRECATED_REMOVED */
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/**
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* \brief This function calculates the SHA-512 or SHA-384
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* checksum of a buffer.
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*
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* The function allocates the context, performs the
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* calculation, and frees the context.
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*
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* The SHA-512 result is calculated as
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* output = SHA-512(input buffer).
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*
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* \param input The buffer holding the input data. This must be
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* a readable buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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* \param output The SHA-384 or SHA-512 checksum result.
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* This must be a writable buffer of length \c 64 Bytes.
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* \param is384 Determines which function to use. This must be either
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* \c 0 for SHA-512, or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will return
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* #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_ret(const unsigned char *input,
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size_t ilen,
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unsigned char output[64],
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int is384);
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#if !defined(MBEDTLS_DEPRECATED_REMOVED)
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#if defined(MBEDTLS_DEPRECATED_WARNING)
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#define MBEDTLS_DEPRECATED __attribute__((deprecated))
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#else
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#define MBEDTLS_DEPRECATED
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#endif
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/**
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* \brief This function calculates the SHA-512 or SHA-384
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* checksum of a buffer.
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*
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* The function allocates the context, performs the
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* calculation, and frees the context.
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*
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* The SHA-512 result is calculated as
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* output = SHA-512(input buffer).
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*
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* \deprecated Superseded by mbedtls_sha512_ret() in 2.7.0
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*
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* \param input The buffer holding the data. This must be a
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* readable buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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* \param output The SHA-384 or SHA-512 checksum result. This must
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* be a writable buffer of length \c 64 Bytes.
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* \param is384 Determines which function to use. This must be either
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* \c 0 for SHA-512, or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will fail to work.
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*/
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MBEDTLS_DEPRECATED void mbedtls_sha512(const unsigned char *input,
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size_t ilen,
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unsigned char output[64],
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int is384);
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#undef MBEDTLS_DEPRECATED
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#endif /* !MBEDTLS_DEPRECATED_REMOVED */
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#if defined(MBEDTLS_SELF_TEST)
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/**
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* \brief The SHA-384 or SHA-512 checkup routine.
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*
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* \return \c 0 on success.
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* \return \c 1 on failure.
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*/
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int mbedtls_sha512_self_test(int verbose);
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#endif /* MBEDTLS_SELF_TEST */
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#ifdef __cplusplus
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}
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#endif
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#endif /* mbedtls_sha512.h */
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